TROUBLESHOOTING

5.Troubleshooting

Monitor

There isn’t a picture.

Check the power supply connection at the local and remote unit. Is the Power (Red LED) at the Local unit illuminated (see page 29)? If not, the internal power-supply may be damaged or there may be an internal error.

Check that the Interconnection cable is connected at the Local Unit and the Remote Unit. Is the Link Status LED illuminated (see page 29)? If not, there may be a problem with the Interconnection cable:

Are there Errors through data transmission over CATX Cable (Cable too long, too high attenuation or too much EMI interference )? Is the Data Error LED illuminated or blinking (see page 29)? If yes, check cable length and environment.

Video Okay LED is dark: CPU does not provide a video signal – Check settings of the graphic card. Try out, connecting a monitor to the local output, to see, whether there is a signal or not.

‘Stepping’ pictures on displaying movies

On high resolutions, the amount of data transmitted each second expires the capability of the data link. Therefore the data have to be reduced before transmitting. This is done in a first step by a so called RLE (=Run Length Encoding) algorithm. If this (loss less) compression does not reach the required amount, frames are dropped: The frame actually transmitted is transmitted completely even if the graphic card generates a new frame. This new frame is discarded. Because of this behaviour, the count of frames per second (fps) may be reduced to a value, where ‘stepping’ pictures are seen.

How to solve the problem: Please use a lower resolution, which is slightly higher than the resolution of the recorded movie. Please see, that most (actual) movies do have only a low resolution of approx. 720x480 (NTSC) or 704x576 (PAL) or even 320x256 (VHS). If the monitor provides a higher resolution, it may provide the scaling of the pictures. The picture quality is the same, if the monitor or the CPU does the scaling.

How to solve the problem: Set the color depth to 16/24Bit AUTOSELECT. On moving pictures, the human eye is not able, to see differences between so many colors. A reduction to 16Bit reduces the amount of data without (visible) effects.

PS2-Keyboard

The PC boots fine with no error messages but the keyboard does not work at all

Wrong cable plugged in, keyboard and mouse cables reversed.

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Black Box DVI-D-Fiber-KVM-Extender Single and DualHead, ACS2009A-R2-xx manual Monitor, PS2-Keyboard, There isn’t a picture
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ACS2028A-R2-xx ACS2209A-R2-xx, DVI-D-Fiber-KVM-Extender Single and DualHead, ACS2009A-R2-xx, ACS2228A-R2-xx ACS4001A-R2-xx, ACS4222A-R2-xx specifications

The Black Box ACS4022A-R2-xx series is a robust line of KVM extenders designed to meet the demands of modern computing environments. These devices, including models ACS4201A-R2-xx, ACS4222A-R2-xx, ACS2228A-R2-xx, ACS4001A-R2-xx, and ACS2009A-R2-xx, provide seamless connectivity for both single and dual-head systems, enabling users to manage multiple servers and computers from a distance. Each model incorporates high-performance technologies that ensure optimal transmission of video and control signals over extended distances.

One of the standout features of these KVM extenders is their ability to transmit high-definition DVI-D video signals, supporting resolutions up to 1920x1200. This capability is essential for professionals working with graphic-intensive applications, such as video editing, design, and simulation work. The extenders utilize fiber optic cabling, which allows for transmission over long distances—up to 10 kilometers—without signal degradation, making them ideal for setups in large facilities or across multiple rooms.

The ACS series includes both single-head and dual-head options, giving users the flexibility to configure their workstations based on their needs. The dual-head functionality is particularly advantageous for multitasking, allowing users to operate multiple screens simultaneously, thereby enhancing productivity. Additionally, these extenders feature USB connectivity, which facilitates the use of various peripherals, such as keyboards, mice, and audio devices, enhancing the overall user experience.

Reliability and ease of use are core characteristics of the Black Box ACS series. The devices are plug-and-play, meaning they can be easily installed without the need for complicated configurations. This aspect is particularly beneficial for IT managers in fast-paced environments who require efficient solutions with minimal downtime. The ACS series also features robust security protocols to protect sensitive data during transmission, ensuring compliance with industry standards.

In summary, the Black Box ACS4022A-R2-xx series and its counterparts are powerful KVM extenders that provide high-quality video and control signal transmission over great distances. With their support for high resolutions, flexible configurations, ease of use, and security features, they cater to the needs of diverse computing environments, making them an ideal choice for professionals seeking to optimize their workflows.
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